chore: upgrade GitHub Actions (TheAlgorithms#78)

Author: cclauss

.github/workflows/ci.yml

@@ -10,9 +10,9 @@ jobs:
   test:
     runs-on: ubuntu-22.04
     steps:
-      - uses: actions/checkout@v2
-      - uses: actions/setup-node@v2
+      - uses: actions/checkout@v3
+      - uses: actions/setup-node@v3
         with:
-          node-version: "16.x"
+          node-version: "18.x"
       - run: npm ci
       - run: npm test